From: Seinfeld
Genre: Television
Who said it?: Jerry Seinfeld
The story behind the quote: We’ve already noted in a previous post that Seinfeld has a lot of memorable quotes. So… here’s another one! The quote is actually said throughout the entire show.
Jerry Seinfeld isn’t particularly a nice guy. He can be selfish and loves to mock others and, once he sees the girl he’s dating have one flaw, he can’t help but fixate with it. But Seinfeld still can get along with pretty much anyone, except for one particular person, and that would be Newman, his “sworn enemy.” Jerry has a particular distaste for Newman (played by Wayne Knight) but he will still greet him with the quote when their paths do cross.
Geek wisdom: It’s still common courtesy to be cordial to the people that we meet. Even if we may not like this person, we still have to be man enough to be civil with each other, even if we may not really mean it. It’s important to do this because, in the future, we may actually find a way to get along with these people that we dislike and just building animosity won’t solve any of our problems anyway.
My Geek Wisdom 
Seinfeld admits in interviews that the backstory for the enmity between his fictional self and the Newman character was never revealed. The real reason for the animosity was simply that it was funnier to have the characters relate to each other that way. As Seinfeld told it, everyone has a friend of a friend they just don’t mesh with (or, less charitably, can’t stand). The Seinfeld character was friends with Kramer on the show, and Newman was a friend of his friend Kramer – not Seinfeld’s friend. I doubt very much there was any “moral” to be drawn from the relationship. The real Seinfeld simply found the interplay to be funny.